EP1317647A1 - Doppelhüllen-trockner - Google Patents
Doppelhüllen-trocknerInfo
- Publication number
- EP1317647A1 EP1317647A1 EP01960051A EP01960051A EP1317647A1 EP 1317647 A1 EP1317647 A1 EP 1317647A1 EP 01960051 A EP01960051 A EP 01960051A EP 01960051 A EP01960051 A EP 01960051A EP 1317647 A1 EP1317647 A1 EP 1317647A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- gas
- chamber
- shell
- air
- inner chamber
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/06—Chambers, containers, or receptacles
- F26B25/08—Parts thereof
- F26B25/12—Walls or sides; Doors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B23/00—Heating arrangements
- F26B23/10—Heating arrangements using tubes or passages containing heated fluids, e.g. acting as radiative elements; Closed-loop systems
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/06—Chambers, containers, or receptacles
Definitions
- the present invention relates to an apparatus and a method for drying moist products, in particular pasta, according to claim 1 and claim 7, respectively.
- moist products such as e.g. Wood, pasta, etc.
- it is particularly important during drying that the drying process takes place in a controlled atmosphere with a suitable "climate”. This means that the temperature, the moisture content and the type of drying gas (usually air) must be in certain ranges so that the products are dried without being damaged, i.e. be brought to a certain target moisture content.
- such dryers are thermally insulated by formwork elements. Due to the process-related high temperature and the high relative air humidity in the dryer with temperatures of typically 90 ° C and relative air humidity of 80 to 90% inside the dryer line, condensation on the inside of the formwork elements occurs with today's dryer assembly, unless one has 100% vapor tightness. In order to prevent moisture from penetrating into the insulation material and to maintain the thermal insulation effect, it is necessary to make the insulation casing vapor-tight. This results in a high level of effort in sealing the interior of the dryer from the surrounding atmosphere. However, up to now it cannot be avoided that the condensate escapes from the dryer in some places.
- the invention is therefore based on the object of preventing the penetration of moisture into the insulation material of the dryer wall / dryer shell, in order to prevent the insulation material from becoming wet and the dryer from leaking.
- a hot air stream with a low relative humidity can thus be circulated between the inner shell and the outer shell of the dryer, which prevents any condensation in the space between the inner shell and the outer shell of the dryer.
- the insulation is spatially separated from the vapor barrier, the gap with the hot dry air forming the actual vapor barrier.
- a previously very expensive vapor barrier made of completely vapor-tight sheet metal directly on the insulation material is therefore not necessary.
- the inner shell which is preferably made of sheet metal, has low thermal insulation, while the outer shell has high thermal insulation made of a conventional insulation material. In conjunction with the dry hot air in the space between this double casing, this ensures that moist air escaping from leaks on the inner casing cannot lead to condensation of water either on the outside of the inner casing or on the inside of the outer casing.
- the outer shell is spaced far enough from the inner shell that the space formed by the two shells of such a double-shell dryer or "dryer in the house" is accessible.
- the outer shell can also consist partially or entirely of an inflatable, resilient material that becomes self-supporting when inflated.
- the hot air flowing around the inner casing has a "climate”, the temperature, humidity and pressure of which are such that no condensation can take place in the double casing.
- the second gas i.e. the dry hot air has a sufficiently high temperature and sufficiently low humidity that its dew point is below the temperature of the ambient air. This prevents condensation on the inside of the outer shell even if it is poorly or not insulated from the outside air.
- the dry hot air in the space should be used in the drying process for pasta and at a usual outside temperature of 25 ° C and 50% relative humidity e.g. have a temperature of about 110 ° C and a relative humidity of about 2%.
- Fig. 1 is a schematic representation of the double casing concept according to the invention for a pasta dryer.
- the drying area consists of an inner chamber 1, which is surrounded by an inner shell 2.
- Pasta to be dried and air that is not too dry are fed in via an inlet duct 6.
- the dried pasta and the "warm, moist” drying air are removed via an outlet channel.
- This part of the dryer according to the invention works like a conventional pasta dryer.
- the inner chamber 1 delimited by the inner shell is surrounded by an outer chamber 3, which in turn is delimited by the outer shell 4.
- Very dry and hot air is passed through this chamber 3.
- the casing is preferably made of sheet steel. Between the inner chamber 1 and the outer chamber 3 there is therefore only a very slight thermal insulation due to the good heat-conducting steel sheet, but forms a vapor barrier.
- the outer shell 4, however, is provided with insulation 5.
- This dry, hot climate in the double envelope 3 between the inner envelope 2 and the outer envelope 4 is generated by heating ambient air by means of a heater 8.
- a part of the ambient air can also be supplied to the ambient air before or after the heating. It is essential that the heating produces dry air with very low relative humidity.
- Typical operating conditions are, for example: approx. 90 p C and approx. 80% relative humidity for the warm, humid air in the drying chamber 1.
- the relative humidity at a temperature of 110 ° C must be 2%.
- this air can also be heated to 220 ° C, in which case the relative air humidity is 0.1%.
- a dry hot air flow of 110 ° C and 2% relative humidity can be achieved.
- 1 shows a line section 12 which runs from the heater 8 to a fresh air supply line 1.
- the exhaust air from the double casing 3 is discharged via a line 14, while the circulating air is returned from a line 13 to the heater 8.
- the supply of steam mentioned in the warm, moist air of the inner chamber 1 is not shown in FIG. 1.
- FIG. 2 shows a plant for carrying out the method according to the invention. While only the “dry-hot” air circuit running through the outer chamber 3 is shown schematically in FIG. 1, FIG. 2 shows both this “dry-hot” air circuit and the “moist-warm” air circuit through the chamber 1, each with one Heat exchangers 16 and 20 and a radial blower 17 and 21, respectively.
- the heat exchangers 16, 20 each ensure the necessary heating in the air chamber, while the radial blowers 17, 21 each ensure the circulation of the air in the respective circuit.
- the pressure of the "warm, humid” air in the inner circuit is preferably set to a somewhat lower value than the pressure of the "dry hot” air in the outer circuit. In this way, possible leaks in the internal ren shell 2 no more moist air get into the space 3 of the double shell by leakage currents; the leakage current is reversed, so to speak. However, efforts are being made to keep the mass flow of the leakage air (kg / h) from inside to outside as well as from outside to inside as minimal as possible.
- sensors for detecting the climate parameters of the respective air are provided both in the inner chamber 1 and in the outer chamber 2.
- these are the air humidity ⁇ i or ⁇ a, the temperature Ti or Ta and the pressure Pi or Pa.
- the actual values of the climate parameters recorded in each case can be compared with their desired values in order, depending on the actual / desired deviation, to use a corresponding actuator to adjust a heat exchanger and / or a throttle valve and / or an orifice plate and / or the steam injection 22 to operate, which regulates the corresponding parameters temperature (Ti, Ta), pressure (Pi, Pa) and air humidity ( ⁇ i, ⁇ a).
- a circulating air system 15 is provided for the homogenization of the "warm, humid" air in the inner chamber 1.
- the inner chamber 1 determined by the inner shell 2 stands on two bases 9, 10. This ensures that the hot hot air flows around the chamber 1 almost completely.
- the intermediate space of the double shell is preferably designed to be so spacious that it can be walked on. This is important for cleaning, maintenance and repair work. There should be a minimum distance of approximately 0.5 m between the inner shell 2 and the outer shell 4.
- the outer shell 4 is preferably designed as a “house” with a door and interior lighting.
- the dryer according to the invention is particularly advantageous because it requires hardly more energy than a conventional dryer. Due to the spatial separation of the vapor barrier (inner shell 2) and the heat barrier or thermal insulation (outer ' shell 4), there is a low leakage current from chamber 1 to chamber 2 or vice versa without any value additional effort achieved an excellent tightness of the dryer without great sealing effort.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Drying Of Solid Materials (AREA)
- Noodles (AREA)
- Manufacturing And Processing Devices For Dough (AREA)
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10045878A DE10045878A1 (de) | 2000-09-14 | 2000-09-14 | Doppelhüllen-Trockner |
DE10045878 | 2000-09-14 | ||
PCT/CH2001/000541 WO2002023108A1 (de) | 2000-09-14 | 2001-09-07 | Doppelhüllen-trockner |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1317647A1 true EP1317647A1 (de) | 2003-06-11 |
EP1317647B1 EP1317647B1 (de) | 2005-01-19 |
Family
ID=7656468
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP01960051A Expired - Lifetime EP1317647B1 (de) | 2000-09-14 | 2001-09-07 | Doppelhüllen-trockner |
Country Status (10)
Country | Link |
---|---|
US (1) | US20040045183A1 (de) |
EP (1) | EP1317647B1 (de) |
JP (1) | JP2004508530A (de) |
AT (1) | ATE287519T1 (de) |
AU (1) | AU2001281661A1 (de) |
BR (1) | BR0113840A (de) |
DE (2) | DE10045878A1 (de) |
RU (1) | RU2003110425A (de) |
TR (1) | TR200300326T2 (de) |
WO (1) | WO2002023108A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114165996A (zh) * | 2021-12-16 | 2022-03-11 | 江苏天相捷新材料科技有限公司 | 一种螺旋式循环烘干器 |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008002334A1 (de) * | 2008-06-10 | 2009-12-17 | Bühler AG | Verfahren zum Herstellen von Teigwaren |
CN103895928A (zh) * | 2014-04-14 | 2014-07-02 | 江南大学 | 一种晾晒用容器 |
DE102014015705A1 (de) * | 2014-10-22 | 2016-04-28 | Wenker Gmbh & Co. Kg | Trockner für technische Gegenstände, insbesondere für lackierte Kraftfahrzeugkarosserien |
CN106052320A (zh) * | 2016-07-05 | 2016-10-26 | 李明波 | 一种节能环保烘干装置 |
CA2973708C (en) * | 2017-07-18 | 2024-01-02 | Jorge Diaz | Method for efficient and effective drying. |
US10962889B2 (en) * | 2018-11-27 | 2021-03-30 | Applied Materials, Inc. | Method and apparatus for high throughput photomask curing |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE118204C (de) * | ||||
GB148171A (en) * | 1919-02-11 | 1921-06-23 | Octave Alexandre Jean Baptiste | Improvements in heating or drying apparatus |
DE3433224A1 (de) * | 1984-09-10 | 1986-03-20 | Lohmann Gmbh & Co Kg, 5450 Neuwied | Trockenvorrichtung fuer bahnfoermige materialien |
EP0194293B1 (de) * | 1984-09-13 | 1990-08-29 | Bühler AG | Wandelement für teigwarentrockner |
DE3821848C1 (de) * | 1988-06-29 | 1989-02-16 | Herberts Gmbh, 5600 Wuppertal, De | |
DE8902342U1 (de) * | 1989-02-28 | 1989-05-03 | Geraetebau Schwarting Kg, 7991 Eriskirch, De | |
WO1991019864A1 (en) * | 1990-06-18 | 1991-12-26 | Hansen Rice, Inc. | Thermodynamic air envelope for food storage structure |
DE4019741A1 (de) * | 1990-06-21 | 1992-01-02 | Peter Kaehmann | Trockenstation fuer feuchtigkeit enthaltende materialien |
DE4215385A1 (de) * | 1992-05-11 | 1993-11-18 | Ibk Industriebedarf Gmbh | Vakuum-Trockenschrank |
DE4324488C2 (de) * | 1993-07-21 | 1998-02-05 | Flaekt Ab | Verfahren und Heißluft-Trockner zur Trocknung beschichteter Oberflächen |
SE9504183L (sv) * | 1995-11-22 | 1997-03-10 | Sten Zeilon | Sätt för torkning inom ett hölje av foliematerial |
DE19907695C1 (de) * | 1999-02-23 | 2000-07-20 | Eisenmann Kg Maschbau | Wandplatte für die Wand eines Groß-Trockners |
-
2000
- 2000-09-14 DE DE10045878A patent/DE10045878A1/de not_active Withdrawn
-
2001
- 2001-09-07 AU AU2001281661A patent/AU2001281661A1/en not_active Abandoned
- 2001-09-07 JP JP2002527711A patent/JP2004508530A/ja not_active Withdrawn
- 2001-09-07 BR BR0113840-5A patent/BR0113840A/pt not_active IP Right Cessation
- 2001-09-07 AT AT01960051T patent/ATE287519T1/de not_active IP Right Cessation
- 2001-09-07 DE DE50105140T patent/DE50105140D1/de not_active Expired - Fee Related
- 2001-09-07 EP EP01960051A patent/EP1317647B1/de not_active Expired - Lifetime
- 2001-09-07 TR TR2003/00326T patent/TR200300326T2/xx unknown
- 2001-09-07 WO PCT/CH2001/000541 patent/WO2002023108A1/de active IP Right Grant
- 2001-09-07 RU RU2003110425/06A patent/RU2003110425A/ru not_active Application Discontinuation
- 2001-09-07 US US10/380,416 patent/US20040045183A1/en not_active Abandoned
Non-Patent Citations (1)
Title |
---|
See references of WO0223108A1 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114165996A (zh) * | 2021-12-16 | 2022-03-11 | 江苏天相捷新材料科技有限公司 | 一种螺旋式循环烘干器 |
Also Published As
Publication number | Publication date |
---|---|
JP2004508530A (ja) | 2004-03-18 |
RU2003110425A (ru) | 2004-10-10 |
EP1317647B1 (de) | 2005-01-19 |
WO2002023108A1 (de) | 2002-03-21 |
BR0113840A (pt) | 2003-06-03 |
AU2001281661A1 (en) | 2002-03-26 |
DE50105140D1 (de) | 2005-02-24 |
TR200300326T2 (tr) | 2003-09-22 |
ATE287519T1 (de) | 2005-02-15 |
DE10045878A1 (de) | 2002-03-28 |
US20040045183A1 (en) | 2004-03-11 |
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